Ultra-Drain Seals® stop spills from going down the drain. It is a valuable addition to any emergency response plan, spill kit or stormwater management program. This storm drain cover is constructed with a flexible, non-absorbing material and reinforced tear-resistant mesh. The pad is designed to quickly and effectively seal a drain in an emergency. NOTE: Not intended for long-term outdoor use (more than two (2) hours), as UV exposure and/or heat for extended periods can degrade the product.